摘要
该餐厨垃圾处理项目采用"机械预处理+厌氧消化"工艺,设计处理能力为200 t/d。机械预处理阶段主要采用自动分选、固液分离、水力除渣技术,能够在无人值守的情况下自动的分选出餐厨垃圾中的塑料、金属等杂物,并将剩余部分中的可生物降解有机质转化成高浓度有机浆料。餐厨垃圾中的油脂经过提纯后制得纯度在98%以上的毛油,预处理生成的有机浆料进入CSTR反应器进行厌氧消化,转化成清洁能源—沼气。该项目实际运行中日均处理餐厨垃圾193.4 t/d,沼气产量为13 924.8 m^3/d,其中CH_4质量分数为63%,毛油产量为3.8 t/d,油脂回收率达87%。
A kitchen wastes treatment project using ＂mechanical pretreatment and anaerobic digestion＂ technology was introduced in this paper. The project was designed to disposal a capability of 200 t/d, and the mechanical pretreatment processes were composed of automatic sorting, solid-liquid separation, and hydraulic dreg removal technologies. Plastics and metal were sorted under the unattended operation condition, and then the majority of biodegradable organics in the residual of the kitchen wastes were dissolved into high concentration solution. Then the solution was treated in CSTR where the biodegradable organics would be converted into methane. At the same time, crude oil were collected and purified, and the degree of purity could achieve 98%. During the actual operation, 193.4 t/d kitchen wastes were treated on average, which were then mainly converted into 13 924.8 m3/d methane containing 63% CH4 and 3.8 t/d crude oiL The rate of crude oil recovery was 87%.
出处
《环境科技》
2016年第5期43-46,共4页
Environmental Science and Technology
基金
江苏省科技成果转化专项资金:餐厨垃圾资源化处理技术及成套装置研发与产业化(BA2015100)
